Supported Cisco APIC objects and attributes:

ENA collects metrics on the following Cisco APIC objects and their attributes.

ENA uses the APIC concept of health. For all metrics(except for APIC CPU andAPIC Memory), APIC health is measured as a percentage:

100% health = healthy.

0% health = unhealthy.

Cisco advises that if health drops below 90%, then there is a problem. Therefore, ENA sets 90% as the default health threshold. When a metric's health drops below 90%, ENA generates an event on that metric.

For the APIC CPUand APIC Memory metrics, ENA also uses a percentage, but the are not based on health. Instead, they are based on usage:

A stream attribute represents information that ENA collects from the network. It is stored in ENA as an attribute of a managed object, e.g. the health of a pod. Stream attributes are used to maintain a history of a metric.